Combined type-writing and computing machine.



2 SHEETS-SHEET I.

A. A. JOHNSON.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED FEB. 9. |915.

Patented Oct. 15, 1918.

INVENTOR:

ATTOF( Y.

.WWE-5 1.4M 7M/mi2.

v.. mamumo, msnmmm n c A. A. JOHNSON.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED FEB. s. 1915.

1,281,783. Patented 00u15, 1918.:

l 2 SHEETS-SHEET 2.

WITN ESSES= UNTTF STATES PATENT OFFICE.

ARTI-EUR A. JOHNSON, OF NE'W YORK, N. Y., ASSIGNOR, BY MESNEASSIGNMENTS, T0 UNDERV/OOD COMPUTING MACHINE COMPANY, OF NEW YORK, N.Y., A CORPORA- TION GF NEW YORK.

COMBINED TYPE-WRITING AND COMPUTING MACHINE.

Application filed February 9, 1915.

To all 207mm t may concern.'

Be it known that I, ARTHUR A. JOHNSON, a citizen of the United States,residing in borough of Bronx, in the county of Bronx, city and State ofNew York, have invented certain new and useful Improvements in CombinedType-Vriting and Computing Machines, of which the following is aspecification.

My invention relates to computing machines adapted to compute numbersrunning to either wide or narrow columns.

One object of the invention is to provide a machine in which it ispossible to use the numeral keys for writing non-computed numbersadjacent the computing column and in which it is also possible to add intwo columns so close together that they would over-lap into each otherif added on a standard totalizer.

My invention is herein shown as applied to an Underwood-Hanson combinedtypewriting and computing machine in which the numeral keys of thetypewriter are caused to set up digits representing a number as thetypewriter carriage travels along and in which said numbers, afterhaving been set up, are later carried into a set of computing wheels.Said machine usually includes totalizer having nine computing Ywheels,and also has so-called comma locks. The specific machine hereinillustrated is such a machine which is used for adding in dollars andcents, wherein there is a commalock adapted to lock the mechanismbetween dollars and cents, and also between hundreds of dollars andthousands of dollars.

Another object of my invention is to provide means whereby when the sizeof the totalizer on which the numeral keys are eective, is reduced, thatany comma-lock may be silenced at the same time if it is normallyeective between computing wheels of which the connections to the numeralkeys have been silencedfor the time being.

In the machine as herein illustrated, the usual Hanson carry-overmechanism is employed withthe result that said carry-over Specificationof Letters Patent.

Patented Oct. 15, 1918.

Serial No. 6,984.

mechanism will enable the whole array of computing wheels to be used foraccumulating the ones carried over into higher wheels in the usualprocess of addition, if the added column is long enough to need sucheXtra number of computing wheels.

My invention is herein disclosed as an iniprovement on the co-pendingapplication of Harry H. Vickers, No. 6,434 filed February e, i915.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure l is a sectional side view of an Underwood-Hanson combinedtypewriting and computing machine showing so much of the machine as isconvenient for illustrating my invention.

Fig. 2 is a diagrammatic side view showing the connections whereby thenumeral Ikeys set up numbers.

Fig. 3 is a perspective view of a part of the denomination-selectingmechanism of such a machine showing my invention as applied thereto.

Fig. 4 is a plan view of part of Fig. 3.

Fig. 5 is a side view of Fig. 3.

Fig. 6 is a perspective view of a cam plate seen in Fig. 3.

Fig. 7 is a perspective view of a guide cooperating with the cam plateof Fig. 6.

Fig. 8 is a perspective view of a second guide plate.

Fig. 9 is a rear View of part of Fig. 3.

Fig. l0 is a diagrammatic view showing the relation of numeral wheels,carry-over mechanism, jacks and denomination selecting tappets. i

Fig. l1 is a view of part of the key-locking mechanism showing thecomma-locking dog.

In thev usual Underwood-Hanson combined typewriting and computingmachine, the alphabet keys l and numeral keys 2 are mounted on the frontend of key levers 3 and are adapted to swing bell cranks or sublevers lwhen depressed forwardly, so as to swing typo-bars 5 upwardly andrearwardly to cause types 6 therein to print against the front side of aplaten 7. Said platen forms part of the usual Underwood typewritercarriage 8, and said carriage is normally tensioned to be drawn inletter-feeding direction by a spring barrel, not shown, and iscontrolled in said letter-feeding, by means of an escapement wheel 9,connected to a pinion 10, said pinion meshing with a rack bar 11,forming part of the typewriter carriage. To control the escapement wheel9, the machine includes the usual dogs 12 and 13, adapted to alternatelyengage said wheel, for this purpose being vibrated by a universal member14, said member being operated by heels 15 on the type-bars 5, as saidbars approach the platen.

When the numeral keys are depressed to print numbers in an addingcolumn, said keys at the same time, set up digit pins 16 on denominationme-mbers or bars 17, there being a denomination member 17 for everydecimal space in the adding column, there being a separate digit pin 16on each denomination member 17, for each digit or numeral key 2.

As the typewriter carriage travels along through the adding column, itraises up the denomination members 17, one after another from theirnormal position seen in Fig. 1 to the position seen in Fig. 2, so thatany bar or member 16 which is thus raised, bringsits pins 16 withinrange of pin-set` ting bars 18, there being one pin-setting bar 18 foreach numeral key 2, and each bar cooperating with the correspondingdigit pins on every one of the denomination members 17 When adenomination member 17 is raised to the position seen in Fig. 2, anynumeral key 2 which is depressed, will swing down its pin-setting bar 18by connections to be hereinafter described, and set its digit pin 16 onthe bar 17 which is thus raised at the moment. Wien the numeral key 2rises from such depression, it feeds along the typewriter carriage oneletter-space, thus tion of setting a pin will be repeated, if a numeralkey is depressed in that column to print on the platen 7. After a pin 16has been depressed, or set on each of several denomination bars 17, thenumbers represented thereby are carried by the usual means, intodenomination or computing wheels 19, at the front ends of the machine,by the connections which will be described later.

The connections by which the typewriter carriage thus raises thedenomination mem ber 17, include the usual tappet 20 on said carriage,which is settable along the rack bar 21, and said tappet, as thetypewriter carriage travels along, will in the adding zone, raise oneafter another, denomination jacks 22, with the result that the raisedjack, as diagrammatically shown in Fig. 2, will elevate its denominationmember 17, there being one jack 22 for each denomination member. Y

To bring about this result, the jacks 22 are pivoted intermediate theirends on a pivot or Cross-rod 23, extending across the casing 24, whichis mounted on the usual bracket V25 at the rear side of the typewriterframe. Each jack 22 when swung up at its forward end, rocks around itspivot 23, with the result that the rear end of said jack presses down ona wire or rod 26, of which there is one for each jack, and one for eachdenomination member 17. When any wire 26 is thus depressed, it rocks itslever 27 so that said lever is effective on the usual transpositiondevice 28, and raises its denomination member 17.

After the typewriter carriage passes out of the adding zone, the tappet20 is clear of the acks 22, and therefore the numeral keys are, ineffect, disconnected from the computing wheels 19. Then a number hasbeen set up in the manner above described, in the adding Zone, thenumbers may be carried into the computing wheels 19 by actuating theusual general operator which includes a cross-bar 29, so that saidcross-bar coming forward, strikes the lower portion of the depressedpins 16, and drives the denomination members or computation bars 17 eachto an extent dependent on the pin 16 which has been depressed thereon,and therefore turns each computing wheel 19 to an extentV dependent onthe pin 16 depressed on its com-V putation member 17. To cause thecomputing wheels 19 to thus turn, the computation members 17 include attheir forward ends racks 30 which mesh with pinions 31 connected to thecomputing wheels 19, said pinions being provided with the usual pawl andratchet connection so that said wheels are not turned on the returnstroke of the general operator, when the cross-bar 29 carries thecomputation members 17 back to their normal positions. Thiscarrying-back of the computation members is effected by lugs 32 on thecomputation members 17 At the very end of the return stroke of thegeneral operator, the usual pin-restoring alate 33 is momentarily raisedto restore all the pins 16 to their usual ineffective position, as seenin Fig. 1.

The UnderwoodHanson machine, also usually` includes a so-called commalock which is adapted to prevent the depression of any numeral key in aletter-space where a period or comma should be written but a digitshouldL not be written. For this purpose, the letter-spaces at whichcommas or periods ought to be written are provided with jacks 22a, justlike the jacks 22V which select the denomination members 17, but saidjacks 22a are not connected to any denomination member. All the jacks22n 22a, however, depress identical rods 26 but the rods 26 which are tooperate the comma lock, rest in the rear ends of bell crank levers 34,instead of being connected to the transposition device 28, and thesebell crank levers each are pivoted to a cross bar 34aM at the lrear endof a forwardly extending link 35, which link is connected to operate acomma-locking dog 36.

This comma lock in the Underwood-Hanson machine is usually built as partof a device for preventing the simultaneous depression of two numeralkeys. The details of this structure, are set forth in the patent ofFrederick A. Hart, No. 1,188,933 patented June 27, 1916, and alsorin theBritish Patent No. 3390 of 1912. Said mechanism comprises a row oflaterally-swinging dogs 37, and sto s adjacent the opposite ends of therow o dogs,` arranged in the manner indicated in said Patent 1,188,933and said British Patent No. 3390 of 1912, to provide a small amount oflost motion throughout the whole row of dogs.

This locking device for preventing simultaneous operation of the keys isalso cooperating with members connected to the numeral keys by which thesetting of the pins 16 is accomplished. To set up said pins, eachnumeral key is provided with a pendant 38, which as the numeral keydescends, is adapted to strike a rock arm 39, fast on a rock shaft 40,said shaft also carrying a rock arm 41, forming part of the pin-settinglinkage, of which the pin-setting bar 18 also forms a part, as disclosedin said British patent and said Hart Patent 1,188,933. The linkageincludes bell cranks which are adapted to swing their pin-sett ting ba-r18 downwardly whenever their shaft 40 is rocked by its numeral key, thusproviding means for depressing or setting the pins on the computationbars 17. For the purpose of preventing the simultaneous depression oftwo numeral keys, each pendant 38 is provided with a lug 42, whichCooperates with the above-described swinging dogs 37, with the resultthat when any lug 42 is carried down between any pair of the dogs 37,said lug takes up all the lost motion in the whole array of dogs, andthis makes it impossible to depress any numeral key until the numeralkey already depressed has risen to its normal position.

F or the purpose of making a comma-lock, this array of dogs 37 has itslost motion also entirely taken up whe-never the commalocking dog 36 israised between two of the swinging dogs 37. The dog 36 is thus raisedwhenever a comma-lock operating wire 26 is depressed by its `jack 22a.From this it because no pendant lug 42 can descend be;

tween any of the dogs 37.

In order to provide means whereby I can reduce the number of computingwheels on which the numeral keys will be effective to add numbers, Iprovide means whereby certain of the rods or wires 26 can be moved toineffective position clear of their jacks 22, with the result that thejacks corresponding to the rods thus made ineffective, will beineffective on the computation members 17, and therefore saidcomputation members cannot be utilized for setting up their digit pins.It follows from this, that the numeral keys are made ineffective tocompute on the numeral wheels corresponding to the jacks whoseconnections to said computation members 17 are thus silenced, this beingso because no numeral key can set up a digit pin on the computationmember corresponding to any of the computing wheels if said membercannot be lifted by the tappet 20.

To permit this to be done, the rods 26 at their upper ends, are passedthrough elongated guide slots 43 in the usual plate 44, fastened to thelower and rear side of the usual casing 24. These guide slots are ofsuch size and shape that the rods are held against sidewise movement,but can move baclm'ardly-7 and forwardly enough so that the rods, unlessheld forward, will fall back clear of the rear ends of the jacks Vhen itis desired to utilize all the computing wheels 19 forming the normaltotalizer, the rods 26 may be all held in their forwardeffectiveposition by means of a guide plate 45 slidable on the bottom ofthe usual plate 44, (which forms part of the casing 24) and having afront straight edge 46, which when said guide plate 45 is drawn forward,will hold the rods 26 against the front edges of the slots 43. Thisguide plate 45 is provided with guide slots 47, through which headedscrews pass into the usual plate 44, to hold the guide .plate 45 inposition, said slots guides for the plate 45.

In order to shift the guide plate 45 from effective to ineffectiveposition, a handle 48 may be drawn forward, said handle being /pivotedat 49 on the brace 50 extending from the casing 24, so that the lowerend of said handle forming the lever 51, will push the plate 45rearwardly, it being enabled to do this by means of a tongue 52extending forward from said plate 45, and having an opening 53 therein,which is engaged bythe lower end of the lever 51. The lever 51 mayassist in guiding the plate 45, and for this purpose works in a narrowslot 54, in the plate 44.

47 formingV llO .gis

In order that the rods 26 when moved ,forward by the guide plate 45, mayengage the underside of the jacks 22, said jacks are provided at theirrear ends with upwardly extending cam extensions 55, under whichextensions the rods 26 are adapted to ride, when moved forward.

The handle 48 is adapted to be detained in either its front or its rearposition by means of a -detent arm 56, attached to the brace 50, andcomprising notches 57, and 58, which serve as detents coperating withthe handle 48, saidfhandle 48 being sufficiently springy to be sprung bythe finger of the operative out of either of said notches, when it isdesired to shift the handle 48.

Itis frequently desirable to silence the connections between thetypewriter carriage and certain of the computation members 17, and forthis purpose, there is provided an auxiliary guide plate 59, which mayhold vall the rods 26 in their eective `positions in which they areunder the rear ends of jacks 22, but which may be shifted laterallyalong the machine, so that it will hold only a deiinitely selectednumber of said rods in their eective position. VIn Fig. 9, saidauxiliary guide plate 59 is shown as effective to hold eight of the rods26 in their effective position under the jacks 22, while the threelefthand Vrods seen in said figure are clear of the auxiliary guideplate 59, V and therefore Vhave fallen rearwardly to a posi-v tion clearof their jacks 22. To permit the auxiliary guide plate 59 to be thusadjust ed, the plate is provided with a slot 60, which coperates withheaded guide screws 6l, fast on the plate 44, the heads of said screwscooperating with ledges formed inside the slot 60. Whenever saidauxiliary guide plate 59 is adjusted to any position, such, as forexample, that shown in Fig. 9, it is detained in such position by meansof a spring detent 62 formed as a flat spring fast on the side of theslide 59, said spring having a projecting head to coperate with notches63 onthe rear side of the usual guide plate 44. These notches are shownnumbered to correspond to the number of numeral wheels in the totalizerwhich remain effective, the detent acting as a pointer on the scalewhich these notches thus form.

. In the form illustrated herein, the slide 5.9 is slidableto a point onwhich onlyV four of the computing Ywheels are connected,so that numberscan be carried into them from the numeral keys. W'hen four'wheels canthus have numbers computed in them, there are :five rods 26 on which thedogs- 22 are effective, there being five rods thus effective forV thereason that the third rod, counting from the right-hand as viewed inFigs. 3 and 4,.

stands at the point where a period is to be written between dollars andcents. f.

It will be noted that the guide plate 59 i adapted to make ineifectivenot only the rods 26 controlling the fth and sixth numeral wheels, butit is also adapted to make the rod 26 between said fifth and sixthwheels ineffective, this rod being the one which is the comma-lockbetween hundreds and thousands of dollars. vThus it will be seen thatthe slide 59 not only determines what computing wheels shall be directlyeffective in the totalizer, but it also determines whether thecomma-lock controlled by the rod 26, between the fifth and sixth numeralwheels, shall be eective. lt will be observed that no such comma-lock isprovided between the two highest computing wheels, this being so toavoid complexity of structure, and such a comma-lock is unnecessarybecause it is found in experience that such a comma-lock is practicallynever of service in a commercial machine. Y A

lt will be observed that the slide 59, for mechanical convenience, ismade to fit over just the length of the usual guide plate 44, and hasits ends cut-oit square to conform to the shape of. said `guide plate.it might happen therefore, that an operative after having used atotalizer comprising only five wheels, would startto use atotalizercomprising six or seven wheels, and would attempt to shift the auxiliarylguide 59, to bring the rods for the additional wheels to edectiveposition, but wouldV indfV such shift-ing impossible because the'flatYend of Vsaid slide 59 might abut up Vsquare against the rod 26,corresponding to the fifth wheel. ln order to prevent a carelessoperator from damaging the machine by attempting to force Jdie guide 59past such a rod, l have provided an auxiliary cam guide 64, providedwith a handle 6,5, so that the'operative, in attempting to shift theguide 59, will naturally seize the handle 65. The cam slideV 64 isslidably mounted on the auxiliary slide or guide plate 59, and for thispurpose, is provided with two slots 66 and 67, each of which cooperateswith one of two screws 68 on theslide` 59, thus permitting the canislide 64 to have a considerable though limited motion on the auxiliaryguide' If the operative attempts to push the cam slide 64 to the left,as seen in Fig. 4, the cam Vsurface forming the left-hand of said camslide, will cam the rods 26 one'v after another toward their effectiveposition. as indicated by arrows in said Fig. 4. At the same time thescrews 68 will be pickedrup by the ends of the slots 66 and 67 and carrythe plate 59 'along to the desired position shown by theindicator62.Vhen the required number ofrods 26- have been thus cammed to effectiveposition, `they willbe held in such position bythe plate 59. Then theoperative may release the handle'65,

whereupon a spring 70, anchored Yin Vthe auxiliary guide plate 59, willdraw the cam guide 64 back to the position in which it normally standson the auxiliary guide 59, shown in Fig. 9.

It will be seen from the above description, that l have in no wayaltered the usual Hanson carry-over mechanism, such as is shown in theHanson Patent 816,319, with the result that the full totalizer with allits wheels may be used for registering numbers, if the numbers incarrying over from wheel to wheel require a totalizer of that length.Such a totalizer normally contains for commercial work, nine wheels. If,however, it is desired to add numbers of say, four figures, eachincluding a. decimal point,'in two adjacent columns (such as thecross-adding shown in Fig. 10) said adding can be done by adjusting theauxiliary guide 59 so that the index detent spring- 62 stands at thenumber 4 on the scale provided on the guide plate 44. These numbers offour digits each, can then be cross-added in the same totalizer byproviding two tappets 20 as shown in Fig. 10. These tappets areeffective to cross-add in the manner set forth in the patent to Stickney1,177,149.

Further, if it is desired to have two footing totalizers foot saidcolumns, as by pro-v viding two different tappets 20working in differentplanes, (shown in the patent of Frederick A. Hart, 1,188,933) saidfooting totalizers will each foot said columns correctly, and thecomma-lock which might prevent the depression of the desired numeralkeys in writing one column, will be disabled. Said comma-lock istherefore effective only within the limitations of range of computingwheels which are actually being used for computation purposes.Nevertheless each totalizer for carrying-over, may utilize all itscomputing wheels.

Again, if it be desired to write two such columns separated by only twoor three let ter spaces, and it is desired to write noncomputed numeralsin said letter spaces, (as is sometimes convenient in numbering items ofaddition) the non-computed numerals can be written without anyinterference from the comma-lock or with the added numbers themselves.

To illustrate the relationship of the computing wheels, carry-overmechanism, jacks and tappets, these are shown diagrammatically in planview in Fig. 10. The operation of this carry-over mechanism is fully setforth in the patent to Hanson 816,319, dated March 27, 1906, wherein thecomputing wheels 19, set the carry-over wheels 71 which are later turnedscm'atz'm by the driving shaft 72 on the return stroke of the generaloperator. i

Variations may be resorted to within the scope of the invention, andportions of the improvements may be used without others. v

Having thus described my invention, I claim:

1. ln a computing machine, the combination with denomination selectorsadapted to be set at various distances from each other, and a seriesofjacks on which said selectors are effective, said selectors arrangedto be brought successively into operative relation to the series ofjacks, of denominational wheels under the control of said jacks, andmeans for silencing said control of said jacks Over a number of wheelswhich can be varied at will to conform to the setting of the selectors,while the other wheels remain under the control of the jacks.

2. ln a computing machine, the combination with denomination selectorsadapted to be set at various distances from each other, and a series ofdenominational wheels, numeral keys, connections whereby each selectorserz'ctm connects said wheels to said keys, said selectors arranged tobe brought successively into operative relation to the series of wheels,means for silencing certain of said connections while the others remainoperative, and means for varying the number of connections so silencedto conform to the setting of the selectors.

3. In a combined typewriting and computing machine, the combination withan array of computing wheels, and a denomination selector therefor, of atraveling typewriter carriage, printing numeral keys, means whereby saidkeys are locked at certain spaces in the travel of said carriage,connections whereby said keys may control said wheels, and a sinOledevice operable for silencing said key-lock and said connections overpart of said wheels.

4. In a combined typewriting and computing machine, the combination withan array of computing wheels, and a denomination selector therefor, of atraif'eling typewriter carriage, printing numerals keys, means wherebysaid keys are locked at certain spaces in the travel of said carriage,connections whereby said keys may control said wheels, means forsilencing said keylock and said connections over part of said wheels,carry-over devices whereby said wheels form a totaliZer, and meanswhereby said carry-over devices are effective irrespective of saidsilenced wheels.

5. 1n a combined typewriting and computing machine, the combination withan array of computing wheels, and a denomination selector therefor, of atraveling car riage, printing numeral keys, connections whereby saidkeys may control said wheels, connections whereby said selector may locksaid keys against operation at predetermined spaces in said carriage,and means independent of said selector for silencing said lockingmeans..

6. In a combined typewriting and computing machine, the combination withan arrayV of computing Wheels and a denomination selector therefor, of atraveling carriage, printing numeral keys, connect-ions whereby saidkeys may control said Wheels, connections whereby said selector may locksaid'keys against operation at predetermined spaces in said carriage,and a single device operable for silencing said locking means and forsilencing a variable number of said key connections to said wheels.

7. The combination with a denomination selector, and a series of jacksoperated thereby, of denomination members on Which said jacks areeffective to operate a predetermined number of said members, meanssettable to vary said number, and a lingerpiece shiftable to make allsaid membersV effective irrespective of the setting of said settablemeans.

S. The combination with a denomination selector, and a series of' jacksoperated thereby, of denomination rods on Which said jacks areeffective, a guide for said rods normally holding them in effectiveposition, means for moving said guide to a position Where it will permitcertain of said rods to move to ineffective position, and an auxiliaryguide adapted to determine the number of rods movable to ineffectiveposition.

9. The combination with aV series of rods and jacks, of a guide adaptedto holdall and jacks, of a guide.' adapted to hold` allY said rods inposition Where said jacks will be effective on them, a finger-piece formoving said lguide to ineective position, an,

auxiliary guide for holding certain of said rods still in Vtheireffective position, and a slidable cam plate adapted to restore saidrods to their effective position.

V11. The combination With a series of rods and jacks, of a guide adaptedto hold all said rods in position Where' said jacks Will be eifective onthem, afinger-piece for moving said guide toineffective position, anauxiliary guide for holding certain of said rods still in theireifective position, a slidable cam plate adapted to restore said rods totheir effective position, and a spring adapted to hold said cam plate inposition Where it Will be normally ineffective on said rods.

l2. The combination With a series of rods and jacks, of a guide adaptedto hold all said rods in position Where said jacks will be effective onthem, a finger-piece formoving said guide to ineifectiveposition, anauxiliary guide for holding` certain of said rods still in theireffective position, and a scale for indicating the number of rodseffective.

13. The combination with a series of rods and jacks, of a guide adaptedto hold all said rods in position Where said jacks Will be effective onythem, a linger-piece for moving said guide to ineective position, anauxiliary guide for holding certain of said rods still in theireffective position, a scale for indicating the number of rods effective,and a slidable cam plate adapted to restore said rods to their effectiveposition.

14. The combination With a series of rods and jacks, of a guide adaptedto hold all said rods in position Where said jacks Will be effective onthem, a finger-piece for moving said guide to ineffective position, anauxiliary guide for holding` certain of said rods in their effectiveposition, a slidable cam plate adapted to restore said rods to theireective position, a spring adapted to hold said cam plate in positionWhere it Will be normally ineffective on said rods, and a scale forindicating the number of rods effective.

l5. In a combined typewriting and computing machine, the combinationWith numeral keys and computing Wheels, Which form a totalizer, of meanswhereby all said yvheels can be used for cross-adding in adjacentcolumns, Where each column has the Width of said Wheels, and means forvariably cutting doWn the number of Wheels in said totalizer on Whichsaid keys are effective for permitting cross-adding of adjacent columnshaving a less numberY of letter-spaces than the number of Wheels in saidtotalizer.

Y16. In a combined typewriting and computing machine, the combinationwith numeral keys and computing Wheels, Which form a totalizer, of meanswhereby all said Wheels can be used forcross-adding in adjacent columns,Where each column has the Width of said Wheels, means for variablycutting down the number of Wheels in said totalizer on Which said keysare effective for permitting cross-adding of adjacent columns having aless number of letter-spaces than the number of Wheels in saidtotalizer, and a scale for indicating the number of Wheels in saidtotalizer on Whichr the numeral keys are effective.

17. In a combined typewriting andV computing machine, the combinationWith numeral keys and computing Wheels, which form a totalizer, of meanswhereby all said Wheels can be used for cross-adding in adjacentcolumns, Where each column has the Width of said Wheels, means Jforvariably cutting doWn the number of Wheels in said totalizer on whichsaid keys are effective for permitting cross-adding of adjacent columnshaving a less number of letter-spaces than the number of Wheels in saidtotalizer, a comma-lock cooperating with said machine and totalizerpreventing the operation of the numeral keys at improper points, andmeans for silencing said comma-lock when the computing wheels aresilenced on both sides of said lock.

18. In a combined typewriting and computing machine, the combinationwith numeral keys and computing wheels, which form a totalizer, of meanswhereby all said wheels can be used for cross-adding in adjacentcolumns, where each column has the width of said Wheels, means forvariably cutting down the number of wheels in said totalizer on whichsaid keys are effective for permitting cross-adding of adjacent columnshaving a less number of letter-spaces than the number of wheels in saidtotalizer, and carry-over devices effective on the Whole array ofcomputing wheels whether any are silenced or not.

19. In a combined typewriting and comput-ing machine, the combinationwith numeral keys and computing wheels, which 'form a totalizer, ofmeans whereby all said wheels can be used for cross-adding in adjacentcolumns, where each column has letter-spaces covering the number of saidwheels, means for variably cutting down the number of wheels in saidtotalizer on which said keys are eiective for permitting crossadding ofadjacent columns having a less number of letter-spaces than t-he numberof wheels in said totalizer, a scale for indicating the number of wheelsin said totalizer on which the numeral keys are effective, andcarry-over devices effective on the whole array of computing wheelswhether any are silenced or not.

20. In ar combined typewriting and computing machine, the combina-tionwith numeral keys and computing' wheels, which form a totalizer, ofmeans whereby all said wheels can be used for cross-adding in adjacentcolumns, where each column has the width of said wheels, means forvariably cutting down the number of wheels in said totalizer on whichsaid keys are effective for permitting` cross-adding of adjacent columnshaving a less number of letter-spaces than the number of wheels in saidtotalizer, a comma-lock cooperating with said ma.- chine and totalizerpreventing the operation or" the numeral keys at improper points, meansfor silencing said comma-lock when the computing wheels are silenced onboth sides or' said lock, and carry-over devices effective on the wholearray of computing wheels whether any are silenced or not.

21. In a combined typewriting and computing machine, the combinationwith a carriage and a totalizer comprising a series of wheels, ofdenomination selectors connected to be operable with said carriage forselecting said wheels, and brought one at a time, during the travel ofthe carriage, into operative relation to the series of wheels, meansoperable at will to make said selectors ineffective on certain of saidwheels of the totalizer, and thereb)v reduce the range of travel of thecarriage in which a selector is operative, so as to permit a closerspacing of the typewritten columns of numbers, and means to vary at willthe number of wheels on which the selectors are'inei'ffective.

22. ln a combined typewriting and computing machine, the combinationwith a carriage and a totalizer comprising a series of wheels, ofdenomination selectors connected to be operable with said carriage forselect-v ing said wheels, and brought one at a time, during the travelot the carriage, into operative relation to the series of wheels, meansoperable at will to make said selectors ineective on certain of saidwheels of the totalizer, and thereby reduce the range of travel orn thecarriage in which a selector is operative, so as to permit a closerspacing ot' the typewritten columns of numbers, means to vary at willthe number of wheels on which the selectors are ineliective, carry overdevices for said wheels, and means whereby said carryeover devices arealways effective on all said wheels throughout the totalizer.

23. In a combined typewriting and computing machine, the combinationwith a carriage and a totalizer comprising a series of wheels, ofdenomination-selecting tappets operable concomitantly with the carriagefor selecting said wheels, jacks operated bythe tappets, one jack foreach wheel, said tappets arranged to be brought successively intoposition for operating the jacks, and means operable at will forrendering a variable number of said jacks ineffective to control thewheels, said tappets relatively adjustable to positions corresponding tothe number of effective jacks.

24. In a combined typewriting and computing machine, the combinationwith a carriage, of a totalizer comprising a series of computing wheels,denominationselecting tappets on the carriage, a row of jacks in thepath of said tappets and arranged to be operated scrz'atz'm by each ofthe tappets, means whereby each jack is operative to control a computingwheel, and means to silence a variable number of jacks at will, andthereby variably control the number of effective jacks, said tappetsbeing relatively adjustable, so that a tappet may be timed to be broughtinto operation when a preceding tappet has concluded its operation onthe effective jacks.

25.' In a computing machine, the combination with a carriage, of aseries of computing wheels, denomination selectors arranged to move withthe carriage, means operable by each selector to control said computingwheels seriatz'm during the travel of the carriage, said selectorsarranged to be brought into operation in succession, so that the seandthereby shorten the distance between ries of computing' wheels is beyondthe conthe selectors required to prevent a Concomil0 trol of oneselector when it is brought into tant operation of Computing Wheels by apluthe control of another selector7 salid selectors rality of selectors.

adjustable to Vary the point, during the ARTHUR A. JOHNSON. travel ofthe carriage, at Which they are Witnesses: brought into operation, andmeans to silence W. O. WESTPHAL,

a variable number of the computing Wheels DELos G. HAYNES.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, .'D. G. Y

